diff --git a/Gemfile.lock b/Gemfile.lock
index 4acda53..2b3ac46 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.1)
     celluloid (0.17.3)
       celluloid-essentials
@@ -71,6 +72,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
+    public_suffix (4.0.6)
     rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)